using System.Runtime.InteropServices;
using WindowsInput.Native;
using WindowsInput;
using System.Windows;
using EscribePassword;
using CommunityToolkit.Mvvm.ComponentModel;

namespace EscribePassword
{

    public partial class Passwords : ObservableObject
    {
        [ObservableProperty]
        private string usuario;

        [ObservableProperty]
        private string password;
    }

    public class KeyboardHelper
    {
        [DllImport("user32.dll", SetLastError = true)]
        private static extern IntPtr GetForegroundWindow();

        [DllImport("user32.dll", SetLastError = true)]
        private static extern bool SetForegroundWindow(IntPtr hWnd);

        [DllImport("user32.dll")]
        private static extern bool GetWindowRect(IntPtr hWnd, ref RECT lpRect);

        [StructLayout(LayoutKind.Sequential)]
        private struct RECT
        {
            public int Left;
            public int Top;
            public int Right;
            public int Bottom;
        }

        private IntPtr previousWindow;

        public void SaveCurrentWindow()
        {
            previousWindow = GetForegroundWindow();
        }

        public Rect GetScreenOfPreviousWindow()
        {
            if (previousWindow != IntPtr.Zero)
            {
                var rect = new RECT();
                if (GetWindowRect(previousWindow, ref rect))
                {
                    return new Rect(rect.Left, rect.Top, rect.Right - rect.Left, rect.Bottom - rect.Top);
                }
            }
            return SystemParameters.WorkArea;
        }

        public void RestoreAndSimulatePaste(Passwords password)
        {
            if (previousWindow != IntPtr.Zero)
            {
                // Restore focus to the previous window
                SetForegroundWindow(previousWindow);

                var sim = new InputSimulator();

                if (password.Usuario != null && password.Usuario.Length > 0)
                {
                    // Simulate typing the username
                    sim.Keyboard.TextEntry(password.Usuario);
                    sim.Keyboard.KeyPress(VirtualKeyCode.RETURN);
                    sim.Keyboard.KeyPress(VirtualKeyCode.TAB);
                }
                // Simulate typing the password
                sim.Keyboard.TextEntry(password.Password);
                sim.Keyboard.KeyPress(VirtualKeyCode.RETURN);
                sim.Keyboard.KeyPress(VirtualKeyCode.TAB);
            }
        }
    }
}